They were around $900 when sold new (limited numbers) but the Pass First Watt B4 active xover would be way better than the Marchand, discrete solid state, steeper slopes and very versatile, just have to wait for one to come up used.
https://www.firstwatt.com/pdf/prod_b4_man.pdf
Pics https://www.audiocircle.com/index.php?topic=161065.0
Cheers George